Concentration of major customers - Schedule of Major Customer Concentrations (Details) - Customer Concentration Risk	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Customer A | Net Sales
Concentration Risk [Line Items]
Concentration risk percentage	10.70%	16.80%	14.20%	16.50%
Customer A | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage					11.10%
Concentration risk percentage, name of additional characteristic			<10
Customer B | Net Sales
Concentration Risk [Line Items]
Concentration risk percentage			10.20%	12.20%
Concentration risk percentage, name of additional characteristic	<10	<10
Customer B | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage, name of additional characteristic			<10		<10
Customer C | Net Sales
Concentration Risk [Line Items]
Concentration risk percentage				10.20%
Concentration risk percentage, name of additional characteristic	<10	<10	<10
Customer C | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage, name of additional characteristic			<10		<10
Customer D | Net Sales
Concentration Risk [Line Items]
Concentration risk percentage, name of additional characteristic	<10	<10	<10	<10
Customer D | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage					15.20%
Concentration risk percentage, name of additional characteristic			<10